T.1 Retrieval of Network Provided Location Information in TWAN access

23.2283GPPIP Multimedia Subsystem (IMS)Release 18Stage 2TS

For a TWAN access, Access Network Information may be reported to the IMS as described in clause E.7 for the case of a GPRS/EPS access, with following exceptions:

– The Access Network Information being reported to the P-CSCF is defined in clause 16 of TS 23.402 [82].

A Geographical Identifier may be generated by the P-CSCF or an IMS AS based on the retrieved Access Network Information, as specified in clause E.8.

Information related to the location of the user provided by the access network may be required in IMS in order to comply with regulatory requirements for SMS over IP. The P-CSCF applies the above mechanisms upon reception of a MESSAGE including the distribution of received information to other IMS entities.

Annex U (normative):
WebRTC access to IMS – network-based architecture